JeromeDL [Semantic Digital Library] - e-Library with semantics - is a digital library system based on J2EE platform and the Semantic Web technologies. It utilizes MarcOnt ontology, FOAFRealm and HyperCuP

MyAlumni is a Java/Jsp open source project that help keep alive the line of communications between alumni/alumnus of any school that are all over the world. Manage profiles with pics, hiding emails, private messaging, and tons of admin features

ACM.EDU.PL is a web application designed for creating and management of
multiple programming contests. Problem sets are similar to those
encountered in IBM's ACM competitions.
It is written basically in JSP+Spring+Hibernate and C++.

WTESTGEN is a web-based application to generate Test exams with a wizard to choose the different possibilities, for example, the number of answers possibilities or the possibility of choosing several corrects answers.